The Last Gas (Fuel Pump Replacement).

You're heading down the road and you notice your vehicle is sputtering, like it's running out of gas.  But the gauge show's it's still got a quarter of a tank.  So what gives?

It could be that your fuel pump is failing, meaning your engine is not getting enough gas to run properly.  While fuel pumps are built to last a long time, sometimes they fail.  Other symptoms you may have a bad fuel pump include your vehicle stalling and then refusing to start again, the engine overheating or a hum or whirr coming from around the gas tank.  Or, your Check Engine light may come on.

Most fuel pumps are in the gas tank. They have a small electric motor in them.   When you bring your vehicle to our service center, a technician will run tests to confirm the fuel pump is getting power to it but has failed.  Some vehicles have an access panel so the fuel pump can be removed and replaced. 

But in some vehicles that don't have that access panel, the technician has to drain the fuel and take the tank out of the vehicle to be able to replace the fuel pump inside.  Some parts such as brackets that attach the pump can be reused when the new fuel pump is installed.  Most technicians will recommend replacing the fuel filter at the same time the fuel pump is changed out.

If the technician has to remove the fuel tank, they'll also check for rust and corrosion and replace any affected parts.

Keep one thing in mind - your vehicle's fuel pump is in the fuel tank because it's kept cool and lubricated by the gasoline in the tank.  Try not to let your fuel level go below a half or quarter of a tank to maximize the life of your fuel pump.  Also, try to use Top Tier gasoline that has higher standards than some other fuels.  Your engine—and fuel pump—will thank you.

Matt Davis Auto
875 US Highway 70 W
Garner, NC 27529
(919) 600-5125
http://www.mattdavisauto.com

Going (Lug) Nuts (Lug Nut Replacement)

Here's a part of your vehicle you probably don't think about much: lug nuts.  They're what fasten your wheels onto your axles.  Pretty important, right? In order to take the wheels off your vehicle to service the brakes, rotate the tires, etc., the lug nuts have to be in good shape so a wrench will grip them tightly. 

Because lug nuts are on your wheels, they are exposed to all the elements of the road (salt, water, grime) and really take a beating. Unfortunately, some manufacturers have made them out of two different metals.  Underneath is the working part of the lug nut, made of steel.  On top is the decorative (the "good looking") part, made out of chrome, stainless steel or aluminum.  After a while, the steel part begins to corrode and expands.  That changes the shape of the outer cap, sometimes rounding off the hexagonal edges and making it hard (if not impossible) to either loosen or tighten the lug nuts since the wrench won't fit any more. 

The reason that's so important is those lug nuts must be functional, especially if you find you have a flat tire somewhere on the road.  If the wheel can't come off to be swapped with a spare, it leaves few options, one of which is your vehicle may have to be towed.  All that for corroded lug nuts!

When you take your vehicle in for service, the technician who works on it keeps an eye on many things, especially if he or she is removing wheels.  It's not unusual for your service advisor to recommend you replace several lug nuts at once since some corrode at a different rate than others. Your repair facility is trying to help you avoid driving a vehicle that has wheels that can't easily be taken off when they need to be.

The good news is there are one-piece lug nuts that don't have the problem the two-piece lug nuts have, so replacing them could eliminate that from happening again any time soon.  And that's not "nuts" at all.

Matt Davis Auto
875 US Highway 70 W
Garner, NC 27529
(919) 600-5125
http://www.mattdavisauto.com

Feeling Powerless (Why Is My Battery Light On?)

When one of your vehicle’s warning lights comes on, the first thing that comes to mind is, “Oh, no, what’s wrong now?” When it’s the battery light, it means there’s something wrong with your vehicle’s battery or charging system.  And because both are important for your vehicle to work properly, it’s a good idea to get it checked out.  Here are some things that may cause a battery light to illuminate.

It could be that your battery has failed.  It could be on its last legs or completely dead.  When it isn’t showing it has the voltage it should, your vehicle lets you know.

If it’s not the battery itself, it could be the system that charges it.  The alternator is part of that system and could have a problem.  It could be putting out no power, too little power, or too much.  The alternator may not be working because the belt that drives it (using the engine’s mechanical power) could be broken or slipping.  Or the alternator pulley may be broken.

The alternator needs to have a solid connection to the battery, and sometimes the posts that connect to the battery cables get so corroded, they can’t conduct enough electricity. Or it could be that a battery cable isn’t conducting power properly. 

Because the alternator supplies power to other parts of your vehicle, if it gets overloaded, it will also cause your battery light to come on.  Other possibilities are an electrical short in the charging system or a failed voltage regulator.

Your vehicle may be hard to start or it may not start at all if you have any of these problems. It’s important to bring it in to us so we can diagnose and repair the problem before you wind up stranded… and feeling really powerless.  

Matt Davis Auto
875 US Highway 70 W
Garner, NC 27529
(919) 600-5125
http://www.mattdavisauto.com